Vulnerable MCP Servers Lab
by appseccoA collection of servers which are deliberately vulnerable to learn Pentesting MCP Servers.
Vulnerable MCP Servers Lab is an open-source mcp server by appsecco, written mainly in JavaScript, with 281 GitHub stars and the MIT license. Its code was last updated Dec 18, 2025.
Scan summary: scanned Nov 5, 2026 at commit 47b7f20. Seen able to run dynamic code. Scan policy
ScannedScanned. The automated checks below ran on the commit shown. Read each line for what was and was not covered.
Full scan at
47b7f20 · Nov 5, 2026 ScannedStatic, secrets and dependency checks completed with no critical findings.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.Static code scanwarnWarning. This check found something worth reading in the findings below. It is not proof of a problem.
Flagged. This check found an issue. See the findings below.Secrets scanfailFlagged. This check found an issue. See the findings below.
Flagged. This check found an issue. See the findings below.Dependency audit289 known vulnerabilitiesfailFlagged. This check found an issue. See the findings below.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.ManifestnonewarnWarning. This check found something worth reading in the findings below. It is not proof of a problem.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Buildn/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Boot & handshaken/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Network egressn/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Reproducible (×3)n/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Findings (69)
- highHigh. Something risky that needs a close look before you install.code-execution issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.@modelcontextprotocol/sdk@1.20.2: 48 known vulnerabilitiesGHSA-345p-7cg4-v4c7, GHSA-46jr-4wx8-v453, GHSA-6prh-2h8m-c8cw, GHSA-6qxp-vccf-f47h, GHSA-8r9q-7v3j-jr4g +43 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.body-parser@1.20.3: 2 known vulnerabilitiesGHSA-27r3-jxmh-p828, GHSA-v422-hmwv-36x6
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.body-parser@2.2.0: 18 known vulnerabilitiesGHSA-27r3-jxmh-p828, GHSA-v422-hmwv-36x6, GHSA-wqch-xfxh-vrr4, GHSA-27r3-jxmh-p828, GHSA-v422-hmwv-36x6 +13 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.path-to-regexp@0.1.12: 1 known vulnerabilityGHSA-37ch-88jc-xwx2
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.path-to-regexp@8.3.0: 12 known vulnerabilitiesGHSA-27v5-c462-wpq7, GHSA-j3q9-mxjg-w52f, GHSA-27v5-c462-wpq7, GHSA-j3q9-mxjg-w52f, GHSA-27v5-c462-wpq7 +7 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.zod@3.25.76: 7 known vulnerabilitiesGHSA-mrhx-c7xc-m3w5, GHSA-mrhx-c7xc-m3w5, GHSA-mrhx-c7xc-m3w5, GHSA-mrhx-c7xc-m3w5, GHSA-mrhx-c7xc-m3w5 +2 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.@modelcontextprotocol/sdk@0.5.0: 2 known vulnerabilitiesGHSA-6prh-2h8m-c8cw, GHSA-w48q-cv73-mx4w
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.async@3.2.0: 1 known vulnerabilityGHSA-fwr7-v2mv-hh25
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.axios@0.21.1: 24 known vulnerabilitiesGHSA-3g43-6gmg-66jw, GHSA-3p68-rc4w-qgx5, GHSA-43fc-jf86-j433, GHSA-5c9x-8gcm-mpgx, GHSA-62hf-57xw-28j9 +19 more
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.body-parser@1.19.0: 3 known vulnerabilitiesGHSA-27r3-jxmh-p828, GHSA-qwcr-r2fm-qrc7, GHSA-v422-hmwv-36x6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.brace-expansion@1.1.12: 7 known vulnerabilitiesGHSA-3jxr-9vmj-r5cp, GHSA-6j4f-fj2g-mc7p, GHSA-f886-m6hf-6m8v, GHSA-mh99-v99m-4gvg, GHSA-q2hr-2g5m-vwhr +2 more
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.braces@2.3.2: 1 known vulnerabilityGHSA-grv7-fg5c-xmjg
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.browserslist@4.28.1: 2 known vulnerabilitiesGHSA-73wf-gq98-2v4g, GHSA-c83g-rgw3-j3cx
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.compression@1.7.4: 1 known vulnerabilityGHSA-vc2v-76pw-4v95
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.decode-uri-component@0.2.2: 2 known vulnerabilitiesGHSA-qr28-fpjm-wq7f, GHSA-vcc3-ghjq-m6fr
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.dicer@0.2.5: 1 known vulnerabilityGHSA-wm7h-9275-46v2
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.engine.io@3.5.0: 2 known vulnerabilitiesGHSA-j4f2-536g-r55m, GHSA-r7qp-cfhv-p84w
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.fast-uri@3.1.0: 12 known vulnerabilitiesGHSA-333x-w4r6-6crp, GHSA-4c8g-83qw-93j6, GHSA-7p8r-x3mc-p8w7, GHSA-f65p-4m7j-42xc, GHSA-hrr3-gc8f-f4qj +7 more
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.form-data@3.0.4: 1 known vulnerabilityGHSA-hmw2-7cc7-3qxx
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.js-yaml@3.14.2: 4 known vulnerabilitiesGHSA-2883-xcg3-v3hh, GHSA-52cp-r559-cp3m, GHSA-5p4m-2wfm-xmqj, GHSA-h67p-54hq-rp68
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.jsonwebtoken@8.5.1: 3 known vulnerabilitiesGHSA-8cf7-32gw-wr33, GHSA-hjrf-2m68-5959, GHSA-qwph-4952-7xr6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.lodash@4.17.20: 4 known vulnerabilitiesGHSA-29mw-wpgm-hmr9, GHSA-35jh-r3h4-6jhm, GHSA-r5fr-rjxr-66jc, GHSA-xxjr-mmjv-4gpg
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.minimatch@3.1.2: 3 known vulnerabilitiesGHSA-23c5-xmqv-rm74, GHSA-3ppc-4f35-3m26, GHSA-7r86-cg39-jmmj
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.moment@2.29.1: 2 known vulnerabilitiesGHSA-8hfj-j24r-96c4, GHSA-wc69-rhjr-hc9g
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.multer@1.4.2: 8 known vulnerabilitiesGHSA-44fp-w29j-9vj5, GHSA-535w-7cp7-47q4, GHSA-5528-5vmv-3xc2, GHSA-72gw-mp4g-v24j, GHSA-qvfw-j98x-7q72 +3 more
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.path-to-regexp@0.1.7: 2 known vulnerabilitiesGHSA-37ch-88jc-xwx2, GHSA-rhx6-c78j-4q9w
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.picomatch@2.3.1: 2 known vulnerabilitiesGHSA-3v7f-55p6-f55p, GHSA-c2c7-rcm5-vvqj
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.qs@6.7.0: 5 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6pq8-jhm2-2vcw, GHSA-6rw7-vpxm-498p, GHSA-hrpp-h998-j3pp, GHSA-w7fw-mjwx-w883
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.serialize-javascript@6.0.2: 3 known vulnerabilitiesGHSA-5c6j-r48x-rmvq, GHSA-m5mm-p8h7-m29v, GHSA-qj8w-gfj5-8c6v
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.socket.io@2.4.0: 1 known vulnerabilityGHSA-25hc-qcg6-38wj
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.socket.io-parser@3.3.4: 2 known vulnerabilitiesGHSA-2m8v-j782-fhvr, GHSA-677m-j7p3-52f9
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.socket.io-parser@3.4.3: 2 known vulnerabilitiesGHSA-2m8v-j782-fhvr, GHSA-677m-j7p3-52f9
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.underscore@1.12.1: 1 known vulnerabilityGHSA-qpx9-hpmf-5gmw
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.uuid@3.4.0: 1 known vulnerabilityGHSA-w5hq-g745-h8pq
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.uuid@8.3.2: 1 known vulnerabilityGHSA-w5hq-g745-h8pq
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.validator@13.5.2: 4 known vulnerabilitiesGHSA-9965-vmph-33xx, GHSA-qgmg-gppg-76g5, GHSA-vghf-hv5q-vc2g, GHSA-xx4c-jj58-r7x6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ws@7.4.6: 2 known vulnerabilitiesGHSA-3h5v-q93c-6h6q, GHSA-96hv-2xvq-fx4p
vulnerable-mcp-server-outdated-pacakges/package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ws@7.5.10: 1 known vulnerabilityGHSA-96hv-2xvq-fx4p
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.ajv@6.12.6: 7 known vulnerabilitiesGHSA-2g4f-4pwh-qvx6, GHSA-2g4f-4pwh-qvx6, GHSA-2g4f-4pwh-qvx6, GHSA-2g4f-4pwh-qvx6, GHSA-2g4f-4pwh-qvx6 +2 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.qs@6.13.0: 5 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6pq8-jhm2-2vcw, GHSA-6rw7-vpxm-498p, GHSA-q8mj-m7cp-5q26, GHSA-w7fw-mjwx-w883
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.qs@6.14.0: 30 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6pq8-jhm2-2vcw, GHSA-6rw7-vpxm-498p, GHSA-q8mj-m7cp-5q26, GHSA-w7fw-mjwx-w883 +25 more
vulnerable-mcp-server-indirect-prompt-injection-remote-mcp/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@babel/core@7.28.5: 1 known vulnerabilityGHSA-4x5r-pxfx-6jf8
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@tootallnate/once@1.1.2: 1 known vulnerabilityGHSA-vpq2-c234-7xj6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.ajv@8.17.1: 1 known vulnerabilityGHSA-2g4f-4pwh-qvx6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.baseline-browser-mapping@2.9.7: 1 known vulnerabilityGHSA-w5vr-8v7q-w6rv
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.cookie@0.4.0: 1 known vulnerabilityGHSA-pxg6-pf52-xh8x
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.cookie@0.4.2: 1 known vulnerabilityGHSA-pxg6-pf52-xh8x
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.debug@4.1.1: 1 known vulnerabilityGHSA-gxpj-cx7g-858c
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.deepmerge@4.3.1: 1 known vulnerabilityGHSA-gcqx-w48m-w2h4
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.express@4.17.1: 2 known vulnerabilitiesGHSA-qw6h-vgh9-j6wx, GHSA-rv95-896h-c2vc
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.follow-redirects@1.15.11: 1 known vulnerabilityGHSA-r4q5-vmmm-2653
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.micromatch@3.1.10: 1 known vulnerabilityGHSA-952p-6rrq-rcjv
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.morgan@1.10.0: 3 known vulnerabilitiesGHSA-4vj7-5mj6-jm8m, GHSA-9f6g-j8ch-79g4, GHSA-jxfw-x594-9x9m
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.on-headers@1.0.2: 1 known vulnerabilityGHSA-76c9-3jph-rj3q
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.parseuri@0.0.6: 1 known vulnerabilityGHSA-6fx8-h7jm-663j
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.qs@6.5.3: 2 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6rw7-vpxm-498p
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.request@2.88.2: 1 known vulnerabilityGHSA-p8p7-x288-28g6
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.send@0.17.1: 1 known vulnerabilityGHSA-m6fv-jmcg-4jfg
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.serve-static@1.14.1: 1 known vulnerabilityGHSA-cm22-4g7w-348p
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.tough-cookie@2.5.0: 1 known vulnerabilityGHSA-72xf-g2v4-qvf3
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.xml2js@0.4.23: 1 known vulnerabilityGHSA-776f-qx25-q3cc
vulnerable-mcp-server-outdated-pacakges/package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.No manifest declaring network access and environment variables (agent.json)
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